32 volt to 12 volt resistor?

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URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=87255
Printed Date: May 11, 2025 at 4:31 AM

Topic: 32 volt to 12 volt resistor?

Posted By: dreamline
Subject: 32 volt to 12 volt resistor?
Date Posted: December 15, 2006 at 5:03 PM

Can someone tell me what size resistor I would need?

My boat has a 32 volt electrical system, but I can only get 12 volt gagues now.

Thanks! Dan

Replies:

Posted By: i am an idiot
Date Posted: December 16, 2006 at 4:47 PM

A resistor is definitely not the way to go. Do you know how much current the guages need? Radio Shack sells a 12 volt regulator that is good for 1 amp. you can parallel them for more current.

There is a diagram on the package but if you need help let us know.

Posted By: jkwylde
Date Posted: January 28, 2007 at 8:08 AM

ok, a resistor could let the things work, but you'd be a lot better off with a transformer with a 3 to 1 turns ratio.

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bangin old school since it was new

Posted By: fakepete
Date Posted: February 23, 2007 at 2:36 PM

Transformers do no work with DC, only with AC.

Are you sure the voltage is 32v? I would think it would be 36v, which is what you get if you wire three 12 volt batteries in series. If this is the case, you can get 12 volts for the guages from one of the batteries.

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